Avoids Deprecated APIs

Overview

Deprecated APIs are scheduled to be removed from Chrome. Calling these APIs
after they're removed will cause errors on your site.

Recommendations

Lighthouse flags the deprecated APIs in your report. Go to Chrome Platform
Status and expand the entries for the APIs that you're using
to learn more about why the APIs are deprecated, as well as how to replace
them.

More information

Lighthouse collects the deprecated API warnings that Chrome logs to the
DevTools Console.